EP 0287679 B1 19940713 - AMPLITUDE-ADAPTED VECTOR QUANTIZER.
Title (en)
AMPLITUDE-ADAPTED VECTOR QUANTIZER.
Title (de)
AMPLITUDEN-ADAPTIVER VEKTOR-QUANTISIERER.
Title (fr)
QUANTIFICATEUR DE VECTEURS ADAPTES EN AMPLITUDE.
Publication
Application
Priority
- JP 1048787 A 19870120
- JP 8700793 W 19871016
- JP 24639686 A 19861016
Abstract (en)
[origin: USRE34562E] PCT No. PCT/JP87/00793 Sec. 371 Date May 26, 1988 Sec. 102(e) Date May 26, 1988 PCT Filed Oct. 16, 1987 PCT Pub. No. WO88/02975 PCT Pub. Date Apr. 21, 1988.An amplitude-adaptive vector quantization system intended for efficient signal coding and decoding. A mean value separation circuit (2) separates the mean value from an input signal which has been divided into blocks, and a tree-search vector quantizer (6) implements tree-search inner product vector quantization so that index information is truncated depending on the detected vector amplitude, thereby reducing the volume of information for transmission.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
G06T 9/008 (2013.01 - EP US); H03M 7/3082 (2013.01 - EP US); H04N 19/94 (2014.11 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
US RE34562 E 19940315; AU 592236 B2 19900104; AU 8076887 A 19880506; DE 3750221 D1 19940818; DE 3750221 T2 19941117; EP 0287679 A1 19881026; EP 0287679 A4 19900409; EP 0287679 B1 19940713; US 4878230 A 19891031; WO 8802975 A1 19880421
DOCDB simple family (application)
US 76150191 A 19910918; AU 8076887 A 19871016; DE 3750221 T 19871016; EP 87906782 A 19871016; JP 8700793 W 19871016; US 20715588 A 19880526